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Some of you folks thankfully have been trying to help me troubleshoot why my 2015 rooftop Dometic Heat Pump (#651816). The units fan will start but shortly after trips the breaker. I have gone through several things to try and diagnose what is causing it. As they say a picture is worth a thousand words words so a video showing testing the compressor for short to ground, replacing the breaker and testing and replacing the start and run capacitors may give you a better understanding of what I have tried. The fan and compressor relays are mounted on the control board so I can't just pull them off and just replace. I appreciate any help I can get. I am not an HVAC tech, just a home owner with enough skills to be very, very dangerous that likes to fix his own stuff and doesn't give up easily. Thanks again for any help you can provide, Mike
It's hot in Texas. Moved to a new park, had 50A pedestals so I ran all three roof top AC units to cool the rig down. After running a while, the circuit breaker tripped and power was off. I reset the breaker, but noticed the breaker was old and weak. It tripped again after only a few minutes of running. The park changed the breaker, noting that they were all some 7 or 8 years old and this type of failure was not uncommon. But I decided just to run two AC units anyway. Noticed on my Progressive EMS unit that voltages were strange: L1 had 103V and 15A, L2 117V and 35A. Of course, the EMS tripped and when it reset it went to the same voltages and tripped again. I turned of one AC unit, now running only one and my voltages were L1 107V, L2 was 117V. I turned off all AC at night, since temps dropped way down. This morning voltages were L1 122V 6A and L2 120V 0V. I powered up a space heater and turned on my electric water heater. Now I'm reading L1 112V 6A and L2 120V 20A. I'm wondering if maybe the pedestal receptacle (which felt normally tight when plugging in) may be bad? Or any other suggestions? I'm leaving this park in 2 days, temps are dropping so I guess I can live with it but I would like to know what the problem is and maybe help the camp host with a positive suggestion. Thanks, John